Father of sociologist was in a car accident and died at the age of 53 on Thursday.
The cause of his death has not been announced, but it is not clear why.
He was a scholar in the department of sociology at the University of Wisconsin, Milwaukee, where he was also a professor.
His wife, Maria, also a sociologist, was driving his car.
Maria’s mother, Maria S. Mancini, told The Associated Press that Maria S.’ husband, Antonio, a retired professor, had been seriously injured in a collision.
A statement from the university said the professor was working on his doctoral thesis at the time of the accident.